8217332: JTREG: Clean up, use generics instead of raw types
34 * @run main/othervm -XX:-ExplicitGCInvokesConcurrent -XX:MinHeapFreeRatio=10
35 * -XX:MaxHeapFreeRatio=12 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc
36 * gc.g1.TestHumongousShrinkHeap
37 */
38
39 import com.sun.management.HotSpotDiagnosticMXBean;
40 import java.lang.management.ManagementFactory;
41 import java.lang.management.MemoryUsage;
42 import java.util.ArrayList;
43 import java.util.List;
44 import java.text.NumberFormat;
45 import gc.testlibrary.Helpers;
46 import static jdk.test.lib.Asserts.*;
47 import jtreg.SkippedException;
48
49 public class TestHumongousShrinkHeap {
50
51 public static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
52 public static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
53
54 private static final List<List<byte[]>> garbage = new ArrayList();
55 private static final int REGION_SIZE = 1024 * 1024; // 1M
56 private static final int LISTS_COUNT = 10;
57 private static final int HUMON_SIZE = Math.round(.9f * REGION_SIZE);
58
59 private static final long TOTAL_MEMORY = Runtime.getRuntime().totalMemory();
60 private static final long MAX_MEMORY = Runtime.getRuntime().maxMemory();
61
62 private static final int HUMON_COUNT = (int) ((TOTAL_MEMORY / HUMON_SIZE) / LISTS_COUNT);
63
64 public static void main(String[] args) {
65 if (HUMON_COUNT == 0) {
66 throw new SkippedException("Heap is too small");
67 }
68
69 if (TOTAL_MEMORY + REGION_SIZE * HUMON_COUNT > MAX_MEMORY) {
70 throw new SkippedException("Initial heap size is to close to max heap size.");
71 }
72
73 System.out.format("Running with %s initial heap size of %s maximum heap size. "
|
34 * @run main/othervm -XX:-ExplicitGCInvokesConcurrent -XX:MinHeapFreeRatio=10
35 * -XX:MaxHeapFreeRatio=12 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc
36 * gc.g1.TestHumongousShrinkHeap
37 */
38
39 import com.sun.management.HotSpotDiagnosticMXBean;
40 import java.lang.management.ManagementFactory;
41 import java.lang.management.MemoryUsage;
42 import java.util.ArrayList;
43 import java.util.List;
44 import java.text.NumberFormat;
45 import gc.testlibrary.Helpers;
46 import static jdk.test.lib.Asserts.*;
47 import jtreg.SkippedException;
48
49 public class TestHumongousShrinkHeap {
50
51 public static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
52 public static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
53
54 private static final List<List<byte[]>> garbage = new ArrayList<>();
55 private static final int REGION_SIZE = 1024 * 1024; // 1M
56 private static final int LISTS_COUNT = 10;
57 private static final int HUMON_SIZE = Math.round(.9f * REGION_SIZE);
58
59 private static final long TOTAL_MEMORY = Runtime.getRuntime().totalMemory();
60 private static final long MAX_MEMORY = Runtime.getRuntime().maxMemory();
61
62 private static final int HUMON_COUNT = (int) ((TOTAL_MEMORY / HUMON_SIZE) / LISTS_COUNT);
63
64 public static void main(String[] args) {
65 if (HUMON_COUNT == 0) {
66 throw new SkippedException("Heap is too small");
67 }
68
69 if (TOTAL_MEMORY + REGION_SIZE * HUMON_COUNT > MAX_MEMORY) {
70 throw new SkippedException("Initial heap size is to close to max heap size.");
71 }
72
73 System.out.format("Running with %s initial heap size of %s maximum heap size. "
|
90
91 free();
92 MemoryUsagePrinter.printMemoryUsage("free");
93 MemoryUsage muFree = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
94
95 assertLessThan(muFree.getCommitted(), muFull.getCommitted(), String.format(
96 "committed free heap size is not less than committed full heap size, heap hasn't been shrunk?%n"
97 + "%s = %s%n%s = %s",
98 MIN_FREE_RATIO_FLAG_NAME,
99 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class)
100 .getVMOption(MIN_FREE_RATIO_FLAG_NAME).getValue(),
101 MAX_FREE_RATIO_FLAG_NAME,
102 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class)
103 .getVMOption(MAX_FREE_RATIO_FLAG_NAME).getValue()
104 ));
105 }
106
107 private void allocate() {
108
109 for (int i = 0; i < LISTS_COUNT; i++) {
110 List<byte[]> stuff = new ArrayList();
111 allocateList(stuff, HUMON_COUNT, HUMON_SIZE);
112 MemoryUsagePrinter.printMemoryUsage("allocate #" + (i+1));
113 garbage.add(stuff);
114 }
115 }
116
117 private void free() {
118 // do not free last one list
119 garbage.subList(0, garbage.size() - 1).clear();
120
121 // do not free last one element from last list
122 List stuff = garbage.get(garbage.size() - 1);
123 stuff.subList(0, stuff.size() - 1).clear();
124 System.gc();
125 }
126
127 private static void allocateList(List garbage, int count, int size) {
128 for (int i = 0; i < count; i++) {
129 garbage.add(new byte[size]);
130 }
131 }
132 }
133
134 /**
135 * Prints memory usage to standard output
136 */
137 class MemoryUsagePrinter {
138
139 public static final NumberFormat NF = Helpers.numberFormatter();
140
141 public static void printMemoryUsage(String label) {
142 MemoryUsage memusage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
143 float freeratio = 1f - (float) memusage.getUsed() / memusage.getCommitted();
144 System.out.format("[%-24s] init: %-7s, used: %-7s, comm: %-7s, freeRatio ~= %.1f%%%n",
145 label,
146 NF.format(memusage.getInit()),
|
90
91 free();
92 MemoryUsagePrinter.printMemoryUsage("free");
93 MemoryUsage muFree = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
94
95 assertLessThan(muFree.getCommitted(), muFull.getCommitted(), String.format(
96 "committed free heap size is not less than committed full heap size, heap hasn't been shrunk?%n"
97 + "%s = %s%n%s = %s",
98 MIN_FREE_RATIO_FLAG_NAME,
99 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class)
100 .getVMOption(MIN_FREE_RATIO_FLAG_NAME).getValue(),
101 MAX_FREE_RATIO_FLAG_NAME,
102 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class)
103 .getVMOption(MAX_FREE_RATIO_FLAG_NAME).getValue()
104 ));
105 }
106
107 private void allocate() {
108
109 for (int i = 0; i < LISTS_COUNT; i++) {
110 List<byte[]> stuff = new ArrayList<>();
111 allocateList(stuff, HUMON_COUNT, HUMON_SIZE);
112 MemoryUsagePrinter.printMemoryUsage("allocate #" + (i+1));
113 garbage.add(stuff);
114 }
115 }
116
117 private void free() {
118 // do not free last one list
119 garbage.subList(0, garbage.size() - 1).clear();
120
121 // do not free last one element from last list
122 List<byte[]> stuff = garbage.get(garbage.size() - 1);
123 stuff.subList(0, stuff.size() - 1).clear();
124 System.gc();
125 }
126
127 private static void allocateList(List<byte[]> garbage, int count, int size) {
128 for (int i = 0; i < count; i++) {
129 garbage.add(new byte[size]);
130 }
131 }
132 }
133
134 /**
135 * Prints memory usage to standard output
136 */
137 class MemoryUsagePrinter {
138
139 public static final NumberFormat NF = Helpers.numberFormatter();
140
141 public static void printMemoryUsage(String label) {
142 MemoryUsage memusage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
143 float freeratio = 1f - (float) memusage.getUsed() / memusage.getCommitted();
144 System.out.format("[%-24s] init: %-7s, used: %-7s, comm: %-7s, freeRatio ~= %.1f%%%n",
145 label,
146 NF.format(memusage.getInit()),
|